Young detectives Fung (Edison Chen) and Kit (Nicholas Tse), having come up through the police academy together, face their toughest challenges when Kit prepares to work for his estranged father in Internal Affairs, while Fung's father owes money to a mob boss whose gang is targeted by the law. This Hong Kong police thriller also stars Roy Chow, Gillian Chung and Michelle Mee. 96 min. Widescreen (Enhanced); Soundtrack: Cantonese and Mandarin Dolby Digital 5.1; Subtitles: English; "making of" documentary; music video; theatrical trailer. In Cantonese and Mandarin with English subtitles.